Extension envelope



Nov. 4 1924.

"1,514,371 J. E. CLOUGH EXTENSION ENVELOPE Filed Nov. 12 1923 lNVENTORF15. E I J se uh E C/ z/yk.

ATTORNEY Patented Nov. 4, 192 3.

JOSEPH EDWIN CLOUGH, OF W'ILIEINGTON, DELA\VAR-E.

EXTENSION ENVELOPE.

App lication filed November 12, 1823.

To all whom it may concern:

Be it known that I, Josnrrr E. GLouGIr, a citizen of the United States,residing at Wilmington, in the county of New Castle and State ofDelaware, have invented certain new and useful Improvements in tensionEnvelopes, of which the following is a specification.

The invention generally relates to stationery and more particularly tothat class of envelopes in which a construction is provided permittingan extension of the dimensions thereof to permit the enveloping ofvaried sizes of enclosures.

In the use of standard sized common type envelopes difiiculty andunnecessary expense are occasioned by reason of the necessity of keepingin stock varied lengths of envelopes to accommodate varied lengths ofenclosuresand by the use of which waste is often occasioned by the useof large sized envelopes where a small one only was necessary and by themistaken addressing of small sized envelopes where large ones wereneeded, necessitating the readdressing of larger ones and the wasting ofthe smaller ones.

Therefore, it is the object of my invention to provide an extensibleenvelope capable of extension to accommodate enclosures of varied lengthand which is composed of two separable units each capable of use as anindividual envelope when the extension fea ture is not needed.

With the above and other objects in view that will hereinafter appearthe invention further resides in those novel details of construction,combination and arrangement of parts, all of which will be first fullydescribed, then be particularly pointed out in the appended claims,reference being had to the accompanying drawing in which Figure 1 is aperspective view of the two parts of my invention one separated from theother.

Figure 2 is a side elevation of the invention in use in its extendedcondition.

Figure 3 is a central horizontal section thereof.

Figure 4: is a view similar to Figure 3 illustrating one part of theenvelope in use as a unit in itself.

Figure 5 is a view similar to Figure 4 illustrating the other part ofthe envelope in use.

In the practical embodiment of my invention my extension envelope iscomposed of Serial No. 674,351.

two parts, one telescopic within the other and hereinafter referred toas the casing part 1 and the telescoping part 2.

The casing part 1 is formed after the manner in which common types ofone-endope'n envelopes are formed except for the opposing flapextensions 33, which are gummed as at 4 for a purpose soon to bedescribed.

The telescoping part 2 is constructed in like manner as the casing part1 except that it includes a single flap extension 5 only, which is alsogummed as at 6 for a purpose later to be described, and which is formedof a width sufficiently narrower than that of the part 1 as to bereadily telescopic thereinto, see Figures 1 and 2.

By reason of constructing the two parts of my improved extensionenvelope as shown and above described, it is possible to use either ofsaid parts as an individual en velope, when the contents 7 to beenveloped thereby are of suitable size, see Figures 4 and 5, or they maybe used in cooperation one with the other, when the contents 7 to beenveloped thereby are of such size as to make it necessary or desirable,see Figure 2.

lVhen the parts 1 and 2 are to be used in cooperation, the part 2 istelescoped into the part 1 as is illustrated into Figure 2 and thegummed surfaces l of the flaps 3 moistened and pressed down to cause thesaid flaps to adhere to the outsides of the part 2 and securely hold theparts together in cooperative relation and sealed against intrusion.

When the part 2 is to be used as an individual envelope, as illustratedin Figure 1, the gummed surface 6 of the flap 5 thereof is moistened andsealed over the envelope end in the manner usual in the use of suchenvelopes.

When the part 1 is to be used as an individual envelope, as isillustrated in Figure 5, one of the flaps 3 thereof is turned into theenvelope and the gummed surface 4 of the remaining flap moistened andsealed over the envelope end to effectively seal the same againstintrusion.

From the foregoing description, taken in connection with the drawing bywhich it is accompanied, the novel details of construction, the mannerof use, and the advantages of my invention will be readily apparent.

What I claim is:

1. An envelope of the class described comprising a casing part and apart telescoping Within said casing, said casing part includ ing atleast one flap extension guniined to permit adhesion of said extensionto the telescopic part to secure the parts at their extended relation.

2. An envelope of the class described comprising a casing part and apart telescopic within said casing, the said casing part including anopposing pair of flap extensions guinined to permit adhesion of saidflaps to the said telescopic part to secure the parts attheir extendedrelation.

3. An envelope of the class described, coinprising a casing part and apart adaptable to telescopic cooperation With the casing part, the saidcasing part including a pair of opposing flap extensions gurnnied toperinit adhesion of said flaps to the said telescopic part to secure theparts at their extended position when used as an extension envelope orone thereof to he turned in and the other turned over and sealed whenthe said casing part is to he used as an individual envelope, and aguinnied flap on said telescopic part adapted to he turned over andsealed when the said part is to be used as an individual envelope.

JOSEPH EDWIN CLOUGH.

